Willamette, McKenzie & Santiam Rivers Fishing Report for August 21st Posted on August 20, 2015 by Michael Teague Water temperature was at 77 degrees at Willamette Falls as of Wednesday this week with water flows continuing to decrease. Chinook counts changed officially from spring to fall fish starting August 16th with a few... This post is only available to Members. If you are a Member, please be sure to log in and remember to select the Remember Me option. If you want to become a member or find out more, take a look here.